Dual Nature Of Light Question 332
Question: If the threshold wavelength for sodium is 5420 Å, then the work function of sodium is [RPMT 2003]
Options:
A) 4.58 eV
B) 2.28 eV
C) 1.14 eV
D) 0.23 eV
Show Answer
Answer:
Correct Answer: B
Solution:
$ W_{0}=\frac{12375}{{\lambda_{0}}}=\frac{12375}{5420}=2.28,eV $